Information disclosure in Firefox ESR - CVE-2017-7763
Published: June 15, 2017 / Updated: May 26, 2020
Vulnerability identifier: #VU7095
CSH Severity: Low
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2017-7763
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform spoofing attack.
The weakness exists due to displaying of some Tibetan characters as whitespace by default fonts on OS X. A remote attacker can use characters in the addressbar as part of an IDN to perform domain name spoofing attacks and read arbitrary files.
Successful exploitation of the vulnerability results in information disclosure.
The weakness exists due to displaying of some Tibetan characters as whitespace by default fonts on OS X. A remote attacker can use characters in the addressbar as part of an IDN to perform domain name spoofing attacks and read arbitrary files.
Successful exploitation of the vulnerability results in information disclosure.
Affected software
Firefox ESR
Mozilla Firefox
SUSE Linux
Mozilla Thunderbird
Mozilla Firefox
SUSE Linux
Mozilla Thunderbird
How to mitigate CVE-2017-7763
Update to version 52.2.
Firefox ESR - update to 52.2.0
Mozilla Firefox - update to 54.0
Mozilla Thunderbird - update to 52.2
Mozilla Firefox - update to 54.0
Mozilla Thunderbird - update to 52.2